Kirsten Dunst, Lars von Trier to make 'porn' film?

Speaking at the Cannes Film Festival, von Trier joked that Dunst has pressed him to make the movie as explicit as possible.

"Kirsten insisted it's going to be a porn film," the Danish filmmaker quipped. "We made this very famous beaver-shot in [Melancholia], where Kirsten demanded to be naked. I said, 'It doesn't really fit the film', and she said, 'No, no, no, no. I feel strongly for this'. So I said, 'OK, let's put it in'. And now she wants more - that's how women are."

Von Trier added that Charlotte Gainsbourg, who appears in Melancholia and 2009's Antichrist, is also "behind" the idea.

"We just want to have a lot of very, very, very unpleasant sex and that's what I'm writing right now," he said. "It's going to be three or four hours long..."